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 November 12th, 2016, 03:32 PM #1 Member   Joined: Sep 2016 From: zambia Posts: 31 Thanks: 0 binary operations Let binary operation * be defined by a*b=a-b+ab, where a and b are real numbers. Solve lx*2l=1 I have solved the question... now I am not so sure whether my answer is correct. I got x=1 or x=1/3 Last edited by skipjack; November 12th, 2016 at 05:21 PM.
 November 12th, 2016, 03:37 PM #2 Math Team     Joined: Jul 2011 From: Texas Posts: 3,044 Thanks: 1627 Your solutions are correct.

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